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Yi Xu

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#machine learning Preprint Sep 2026

ARS: Agentic Reward System for Robot Learning

The Agentic Reward System (ARS) is introduced, an inference framework for progress reward modeling with general-purpose vision-language models (VLMs), without additional reward-model training, and its results suggest that structured inference and verification can improve the usefulness of general-purpose VLMs for robot...

Sheng-Miao Hu, Wei-Yi Lu, Ling-Bing Zeng et al. · 0 citations
Preprint Sep 2026

RoboFolDeX: A Physical-World Benchmark for Long-Horizon Robotic Manipulation of Deformable Objects

RoboFolDeX is introduced, a physical-world benchmark built entirely from real-robot data, with garment folding as its primary task, and a fair real-robot evaluation platform for externally submitted policies, with standardized tasks, held-out physical objects, controlled initializations, and a unified execution protoco...

Chen-Huan Liu, Yi Xu, Feng Wu et al. · 0 citations
#artificial intelligence Preprint Sep 2026

MaskHarness-WAM: Instance-Grounded Harnessing for Long-Horizon Robot Manipulation

Experiments on a real robot platform demonstrate that MaskHarness-WAM substantially outperforms limited-horizon policies on sequential multi-object manipulation, showing its effectiveness in extending local manipulation skills to reliable long-horizon execution.

Zi-Tai Huang, Taiyi Su, Jian Zhu et al. · 0 citations
#artificial intelligence Preprint Sep 2026

CSWAM: Better Causal Semantic Representations for Out-of-Distribution Generalization in World Action Models

The Causal Semantic World Action Model (CSWAM) is presented, which augments FastWAM with a causal semantic expert built on V-JEPA 2.1, which provides temporally grounded representations of semantic state changes and motion with less dependence on appearance-specific details.

Tian-Bin Liu, Jian Zhu, Taiyi Su et al. · 0 citations
Jul 2026

DSWAM: A Dual-System World Action Foundation Model for Fine-Grained Robot Manipulation

DSWAM is introduced, a Dual-System World Action Foundation Model for fine-grained robot manipulation and built and evaluated under the DeMaVLA real-world deformable manipulation setting with matched robot platform, pretraining data, post-training data, and evaluation criteria.

Jian Zhu, Jianjun Zhang, Taiyi Su et al. · 2 citations
Preprint Jul 2026

Learning 4D Geometric Priors for Inference-Efficient World Action Models

MECo-WAM is proposed, a Multi-Expert Co-Training World Action Model that injects action-relevant 4D geometric priors into video-action representations while preserving the original lightweight inference graph.

Jianjun Zhang, Jian Zhu, Taiyi Su et al. · 5 citations

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